Devon
Pitched and lean-to roof rear extensions in Devon
Lean-to, gable and hipped roofs that give a vaulted ceiling. Across Devon we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Plymouth, Exeter and Paignton.
Pitched roofs suit the cottages and slate-roofed houses in parts of Devon. Stone-built and rendered houses are common around Devon, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.
How much does a pitched-roof rear extension cost in Devon?
For Devon we work from the South West England rate: £2,080–£3,380 per square metre of new floor, including VAT, standard specification. South West prices run slightly above our West Midlands baseline; natural stone to match the house is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,000–£40,500 |
| 4 m wide × 5 m deep (20 m²) | £41,500–£67,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in Devon?
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in Devon do we work?
FAQ
Questions people ask
Will a lean-to fit under my windows?
We check the sill heights at the survey; low windows usually mean a flat roof instead.
Are roof windows allowed?
Yes; they are the usual way to bring light into a pitched-roof extension.
Is a pitched roof more expensive?
Slightly, typically a few per cent more than a flat roof of the same area.
Do you cover all of Devon?
We cover 21 towns and districts in Devon, including Plymouth, Exeter and Paignton.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.